Influence of quadrupole–quadrupole-type interaction on the chaotic dynamics of $\alpha$-helical proteins

Pramana: Journal of physics

K ANGELIN JEBA^1¹  M M LATHA^1² 

[1] Department of Physics, Women’s Christian College, Nagercoil 629 001, India^1;Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India^2

关键词: $\alpha$-Helical proteins;    chaos;    Lyapunov exponents;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

By proposing a model Hamiltonian in the first quantised form we investigate the chaotic dynamics of $\alpha$-helical proteins by taking into account the quadrupole–quadrupole-type interaction. The dynamics is studied byderiving Hamilton’s equations of motion and by plotting the time-series evolution and phase-space trajectories. Chaotic trajectories are observed in the phase-space plots. The effect of the interaction parameters on the stabilityof proteins is also discussed.

【 授权许可】

CC BY